5. [2.66/4 Points] Two carts mounted on an air track are moving toward one another. Cart 1 has a speed of 0.8 m/s and a mass of 0:51 kg. Cart 2 has a mass of 0.68 kg. (a) If the total momentum of the system is to be zero, what is the initial speed (in m/s) of Cart 27 (Enter a number.) 0.6 m/s (b) Does it follow that the kinetic energy of the system is also zero since the momentum of the system is zero? O Yes No (c) Determine the system's kinetic energy (in ]) in order to substantiate your answer to part (b). (Enter a number.) 0.23 X Can you write an expression for the total kinetic energy of the system (both carts)? ] ?E To Ta? ?E = - (0.51?g) (0. 87/?) 1 + (0. 68?g)(0. 67/?) = 0.2856